Where f turns, its derivative crosses zero. Where f rises, the derivative sits above the axis, and where it falls, below. Reading those three things off the graph is enough to draw f' without a formula.
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f rises to a high point at x=−1, falls to a low point at x=2, then rises. Sketch f′.
f' is zero at the two turning points, x = -1 and x = 2.
f rises before -1 and after 2, so f' is above the axis there.
f falls between -1 and 2, so f' is below the axis there: an upward parabola through -1 and 2.
The answer is f′=0at x=−1and x=2.
Where students go wrong
Copying the shape of f. The derivative is the slope, not the height: a high point of f is a zero of f', not a high point of it.
Also called sketching the derivative, graph of f prime, graphing f prime from f, derivative graphs, comparing a function and its derivatives or f, f' and f''.
Questions about these worksheets
Yes. Every graphing the derivative sheet is free to print and free to download as a PDF. There is no account to make, no email to hand over and no limit on how many you take.
Yes. The answer key prints on a second page, and you can choose whether it shows each question beside its answer or just the answers in a list.
Yes. Print straight from the page, or download the PDF and print that. The sheet is laid out for paper rather than squeezed off a screen, so there is room to work under each question, and the answer key comes out on its own page.
Calculus is usually taken around 12th grade or a first college course, though schools vary and plenty of students meet it earlier or later. Pick the difficulty rather than the grade: the easy level suits a first lesson on it, the hard level suits review before a test.
Yes, as many as you like. The questions are built fresh each time rather than picked from a fixed set of files, so pressing Generate gives a new sheet. That is what you want for a second class, a retake, or two students sitting next to each other.
That is the closest comparison, and Kuta Software is good software. It is also paid software you install on a computer. These worksheets run in a browser tab for free, with no account and nothing to install. Like Kuta, the graphing the derivative questions are generated when you ask for them rather than pulled from a fixed set of files, so two classes never get the same sheet, and the answer key comes with it.
Yes. There are three levels, and you can tick more than one for a sheet that mixes them, in which case the questions come out easiest first. The harder levels are not just larger numbers: they ask for something the easy ones do not.
Copying the shape of f. The derivative is the slope, not the height: a high point of f is a zero of f', not a high point of it.